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Built 2026-10-19 (19 October 2026)

Cipo Threshold Days by Year (BR001138014)

4 fixed thresholds counted per year at Cipo (BR001138014): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Cipo Thresholds

  • Cipo: days with 10 mm (0.39 in) or more of precipitation in 43 years, most in 1974 with 52.
  • Cipo: days with 25 mm (0.98 in) or more of precipitation in 41 years, most in 1974 with 15.
  • Cipo: days with 50 mm (1.97 in) or more of precipitation in 24 years, most in 1978 with 4.
  • Cipo: days with 100 mm (3.94 in) or more of precipitation in 3 years, most in 1988 with 2.
  • 4 fixed thresholds have at least one qualifying day at Cipo.
43 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Cipo Days per year at Cipo with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 52 in 1974. 02040601945: 91946: 91947: 221948: 191949: 151950: 111951: 91953: 101954: 131955: 111956: 171957: 211959: 91960: 281961: 91962: 81963: 71968: 241973: 241974: 521975: 221976: 161977: 321978: 191979: 191980: 251981: 171982: 181983: 161984: 201985: 361986: 181987: 121988: 291989: 301990: 111993: 81994: 101995: 91996: 101997: 181998: 101999: 13194519501956196219751980198519901997
Days per year at Cipo with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 52 in 1974.
Days with 10 mm (0.39 in) or more of precipitation per year at Cipo
YearDaysDecade average
1945914.8
1946914.8
19472214.8
19481914.8
19491514.8
19501112.6
1951912.6
19531012.6
19541312.6
19551112.6
19561712.6
19572112.6
1959912.6
19602815.2
1961915.2
1962815.2
1963715.2
19682415.2
19732426.3
19745226.3
19752226.3
19761626.3
19773226.3
19781926.3
19791926.3
19802522.1
19811722.1
19821822.1
19831622.1
19842022.1
19853622.1
19861822.1
19871222.1
19882922.1
19893022.1
19901111.1
1993811.1
19941011.1
1995911.1
19961011.1
19971811.1
19981011.1
19991311.1
First to last qualifying date each year at Cipo For each year, a bar from the first to the last day at Cipo meeting 10 mm (0.39 in). 1945: 11 January 1945 to 29 December 19451946: 3 February 1946 to 20 July 19461947: 22 January 1947 to 4 December 19471948: 29 February 1948 to 30 December 19481949: 12 April 1949 to 29 November 19491950: 1 January 1950 to 16 November 19501951: 2 March 1951 to 18 December 19511953: 4 January 1953 to 16 December 19531954: 9 February 1954 to 7 December 19541955: 26 January 1955 to 19 December 19551956: 20 January 1956 to 1 December 19561957: 8 January 1957 to 26 November 19571959: 2 March 1959 to 31 December 19591960: 2 January 1960 to 21 December 19601961: 17 January 1961 to 29 June 19611962: 10 March 1962 to 27 December 19621963: 10 February 1963 to 15 November 19631968: 31 January 1968 to 20 November 19681973: 9 March 1973 to 7 October 19731974: 3 January 1974 to 17 December 19741975: 22 January 1975 to 31 December 19751976: 4 February 1976 to 13 November 19761977: 19 January 1977 to 28 December 19771978: 1 March 1978 to 17 December 19781979: 11 January 1979 to 2 December 19791980: 7 January 1980 to 19 December 19801981: 15 February 1981 to 29 December 19811982: 17 January 1982 to 29 December 19821983: 23 January 1983 to 30 November 19831984: 3 January 1984 to 17 November 19841985: 5 January 1985 to 19 December 19851986: 9 February 1986 to 28 December 19861987: 10 March 1987 to 5 August 19871988: 2 January 1988 to 18 December 19881989: 20 March 1989 to 25 December 19891990: 17 February 1990 to 29 December 19901993: 1 February 1993 to 30 November 19931994: 5 March 1994 to 21 December 19941995: 27 March 1995 to 31 December 19951996: 29 February 1996 to 4 December 19961997: 18 February 1997 to 1 December 19971998: 24 January 1998 to 24 August 19981999: 12 January 1999 to 19 December 199919451951195919731979198519931999JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Cipo meeting 10 mm (0.39 in).
First to last qualifying date each year at Cipo
YearFirst dateLast date
19451945-01-111945-12-29
19461946-02-031946-07-20
19471947-01-221947-12-04
19481948-02-291948-12-30
19491949-04-121949-11-29
19501950-01-011950-11-16
19511951-03-021951-12-18
19531953-01-041953-12-16
19541954-02-091954-12-07
19551955-01-261955-12-19
19561956-01-201956-12-01
19571957-01-081957-11-26
19591959-03-021959-12-31
19601960-01-021960-12-21
19611961-01-171961-06-29
19621962-03-101962-12-27
19631963-02-101963-11-15
19681968-01-311968-11-20
19731973-03-091973-10-07
19741974-01-031974-12-17
19751975-01-221975-12-31
19761976-02-041976-11-13
19771977-01-191977-12-28
19781978-03-011978-12-17
19791979-01-111979-12-02
19801980-01-071980-12-19
19811981-02-151981-12-29
19821982-01-171982-12-29
19831983-01-231983-11-30
19841984-01-031984-11-17
19851985-01-051985-12-19
19861986-02-091986-12-28
19871987-03-101987-08-05
19881988-01-021988-12-18
19891989-03-201989-12-25
19901990-02-171990-12-29
19931993-02-011993-11-30
19941994-03-051994-12-21
19951995-03-271995-12-31
19961996-02-291996-12-04
19971997-02-181997-12-01
19981998-01-241998-08-24
19991999-01-121999-12-19

Every Fixed Threshold

Fixed thresholds at Cipo
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain4352197413
25 mm (0.98 in): Days with 25 mm or more rain411519742
50 mm (1.97 in): Days with 50 mm or more rain24419781
100 mm (3.94 in): Days with 100 mm or more rain3219882

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1945.

Download the Data

  • Data for Cipo threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).